Hrishi
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Now, Gollum doesn't think , So. Ehe he he. ,No man, I can identify an HD 598 from miles away. For the 600/650, it's difficult to ascertain which is which. If you look at my edit history (IIRC mods can see it so ask them) you'll see I mentioned the 598 and the HD 6X0 with an explanation inside parantheses.
For reference: I own an HD 558 myself, so it's even easier.
Just kidding.